I have often wondered why some GW owners work so hard to research and investigate such a mundane piece of equipment such as the oil filter! Frankly, I have peace of mind buying the Honda OEM filter, it works, it fits, and I know I won't have an issue with it. I can think of many other ways to save $5! Stick with what Honda designed to work on your expensive Goldwing. Besides, buying them at WingStuff is the way to go price wise.